Research
An Examination of Polypharmacy Claims
A study that uses 2016 – 2017 California workers' compensation prescription data to determine the prevalence of polypharmacy in the system and to identify the types of drugs used in polypharmacy prescribing.
Initial UR & IMR Rx Drug Outcomes Under the Formulary
Using data from 141,643 pharmaceutical requests and UR decisions from the first five months of 2017 and 2018, and 58,604 IMR decisions from the first four months of those same two years, CWCI takes a preliminary look at changes in pharmaceutical UR and IMR outcomes in the first few months after Californias WC Formulary took effect.
Independent Medical Review Decisions, January 2014 Through December 2017
Recent data on the IMR process for resolving workers comp medical disputes. measuring changes in IMR volume in 2017, and comparing IMR outcomes based on a review of 648,450 IMR decision letters issued from 2014 through 2017.
California Workers' Compensation Inpatient Hospitalization Trends
CWCI research measures and compares changes in the volume of inpatient hospitalizations in WC, Medicare, Medi-Cal and private plans from 2008-2016, notes the most common WC inpatient diagnosis-related group codes (MS-DRGs) and the top 5 Major Diagnostic Categories (MDCs); and provides detailed data on other workers compensation inpatient trends, including average length of stay and changes in the volume of implant-eligible spinal surgeries.
CWCI Prescription Drug Interactive Tool
An online application that CWCI members can use to examine and compare industrywide prescription drug data derived from 12.5 million prescriptions dispensed to injured workers between January 2007 and June 2017.
California Workers' Compensation Prescription Drug Distributions & Opioid Trends
A CWCI Research Update report shows changes in California workers' comp prescription drug and payment distributions by therapeutic drug group and provides detailed information on the latest opioid trends.






